This is an example of Parasite SEO. You get a site with high Authority site that you can put some content on (HN/Reddit/Medium/Steemit/GetJar). Then you send a lot (100k+) spammy backlinks and then rank for some difficult terms. Google doesn't penalise big sites for spammy backlinks compared to a fresh domain, and also with the high authority, it will rank a lot quicker. A good way to find example of Parasites is to…
Can you explain this again in more detail? Not being versed in SEO ways, I want to understand it but don't.
The more links your website has from some other websites, the more popular your site is.
If these links come from "an authority" (an already popular site, like HN, Reddit, Wikipedia or other main website like that), the more popular your site is.
By "popular" I mean more relevant for Google.